ALBANY, N.Y. -- An official familiar with the investigation said the New York Attorney General's Office has issued subpoenas to six firms and sent a letter to another for details about split-second stock trading and any unfair advantages they may have gained.
The official told The Associated Press Wednesday the subpoenas went last week to trading firms, including Chicago-based Jump Trading LLC and Chopper Trading LLC and Tower Research Capital in New York. The official spoke on condition of anonymity.
Jump Trading, Chopper Trading and Tower Research did not immediately respond to requests for comment.
Attorney General Eric Schneiderman has said advantages in computer hardware and placement enable some traders to get millisecond timing advances to make "rapid and often risk-free trades before the rest of the market can catch up."
His office, with authority to investigate securities fraud under New York's Martin Act, is seeking details about trading strategies and special arrangements with trading venues, including exchanges and so-called "dark pools" for buying and selling securities.
At a New York Law School symposium last month, he discussed some concerns.
"Rather than curbing the worst threats posed by high-frequency traders, our markets are becoming too focused on catering to them," he said.
The attorney general's office says advantages include extra computer network bandwidth, ultra-fast connection cables and special high-speed switches to computer servers. Some traders are allowed to place their computer servers within trading venues. The timing advantages let those traders make "rapid and often risk-free trades before the rest of the market can catch up."
The attorney general last year reached an agreement with Thomson Reuters to stop selling to high-frequency traders a two-second peek at some market-influencing consumer survey results, followed by agreements in February for several financial firms to stop co-operating with analyst surveys that favoured some elite clients.
-- The Associated Press